A synthetic blue indigoid dye, also used as a food colour, regulated in Annex IV.
What it is
CI 73015 is indigo carmine, the disodium salt of indigo disulphonic acid, a blue colour that CosIng classes chemically as an indigoid colour. It is also used as a food colour under the number E 132. CosIng lists it as a colorant. In the EU it is listed in Annex IV (colorants).
Where it is used
Found in coloured products such as toothpastes, bath products and soaps.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
See the EU regulation section for the applicable conditions, including purity criteria. The INCI list does not show how much colour it contributes.
Functions
- Colorant
- Exclusively or mainly intended to colour the cosmetic product, the body as a whole or certain parts thereof, by absorption or reflection of visible light; (precursors of oxidative hair colorants shall be deemed colorants). All authorised colorants are substances in the positive list of Annex IV to the Cosmetics Regulation 1223/2009.
EU regulation
EU · Annex IV, entry 99Disodium 5,5'-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate
- Conditions and warnings
- Purity criteria as set out in Commission Directive 95/45/EC (E 132)
- As of
- 3 November 2026 · (EC) 2009/1223